Mainlines
n. 主线；静脉注射\\nvt. 把海洛因等毒品直接注入静脉\\nvi. 沉溺于；注入\\na. 主流的；沿干线的；传统的
🗣️ 情景例句
Nice weather today, isn't it?
天气不错，是吧？
I'm going to show him how to speak Chinese.
我正要指点他如何讲中国话。
I would be very grateful for information about entry to your college.
若能寄给我贵校的入学申请材料我将十分感激。